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  • Type 40BF

    The Type 40BF is a ¼" microphone for high level and high frequency measurements. Its low sensitivity makes it ideal for measuring very high sound pressure levels; up to 174 dB re. 20µPa. Its small size reduces disturbances in t…

  • Type 40AM

    The Type 40AM is a high precision microphone for laboratory work and as a working standard microphone in calibration laboratories. It covers a frequency range from 3.15 Hz to 40 kHz. Its small size and lower sensitivity make it ex…

  • Type 40AC

    The Type 40AC is a high precision microphone for laboratory work and as a working standard microphone in calibration laboratories. It covers a frequency range from 3.15 Hz to 40 kHz. Its small size and lower sensitivity make it ex…

  • Type 40AE

    The Type 40AE is ½" general purpose prepolarised microphone, covering a frequency range from 3.15 Hz to 20 kHz. Because of its high sensitivity, it can measure sound pressure levels down to 15 dB re. 20µPa.

  • Type 40AF

    The Type 40AF is a general purpose microphone, covering a frequency range from 3.15 Hz to 20 kHz. Because of its high sensitivity, it can measure sound pressure levels down to 15 dB re. 20µPa.

  • Type 40AN

    The Type 40AN is a high-sensivity free-field microphone similar to the Type 40AF except for its lower-limiting frequency which is below 1 Hz and makes it suitable for infra-sound measurements..

  • Type 40BE

    The Type 40BE a ¼” microphone for high level and high frequency measurements. Its low sensitivity makes it ideal for measuring very high sound pressure levels; up to 166 dB re. 20µPa. Its small size reduces disturbances in th…

  • Type 40AZ

    The G.R.A.S. ½″ Free-field microphone Type 40AZ is a precision condenser microphone for low-frequency (incl. infra-sound) measurements in open acoustic fields. It is a pre-polarized free-field microphone with a large dynamic …